There is a bird flying in the sky.这个是现在进行时?为什么flying前面没be

There is a bird flying in the sky.这个是现在进行时?为什么flying前面没be -------------is“a flying ball in the sky” Like being a bird flying in the sky please _____ (look) at the sky now.There's a bird flying in 翻译：A bird is flying slowly by the black clouds in the sky . Look!A bird ( ) in the sky.A.flies B.is flying C.fly D.flyin Taking a plane is like a bird [flying]in the sky正确形式填空 there is a big bird is flying on the blue sky.这样说对吗 有2个is可以吗 The plane is flying in the sky. There is a lovely kite flying in the sky.改为反意疑问句 赞同0|评论 look the little bird is flying —the sky The bird is flying in the sky改一般疑问句xiesadpo